CN111324238A - Touch module and display device - Google Patents
Touch module and display device Download PDFInfo
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- CN111324238A CN111324238A CN202010194591.6A CN202010194591A CN111324238A CN 111324238 A CN111324238 A CN 111324238A CN 202010194591 A CN202010194591 A CN 202010194591A CN 111324238 A CN111324238 A CN 111324238A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0412—Digitisers structurally integrated in a display
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
- G06F3/0443—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a single layer of sensing electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04111—Cross over in capacitive digitiser, i.e. details of structures for connecting electrodes of the sensing pattern where the connections cross each other, e.g. bridge structures comprising an insulating layer, or vias through substrate
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- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
The disclosure relates to a touch module and a display device. The touch module includes: the touch screen comprises a substrate and at least one group of touch patterns formed on one side of the substrate, wherein each group of touch patterns comprises: a conductive bridge having a plurality of bridge bits arranged at intervals in a first direction; an insulating support portion disposed on the conductive bridge; the insulating support part comprises a plurality of first support parts arranged at intervals in a first direction and second support parts positioned between adjacent first support parts and spaced from the first support parts; each first supporting part corresponds to one bridging position and is provided with a through hole exposing the bridging position; the touch electrode part comprises a plurality of first touch electrodes arranged at intervals in a first direction and second touch electrodes positioned between adjacent first touch electrodes and spaced from the adjacent first touch electrodes; each first touch electrode is formed on a first supporting part and is electrically connected with the bridging position through a via hole, and each second touch electrode is formed on a second supporting part. The scheme enables the touch module to have good bending capability.
Description
Technical Field
The disclosure relates to the technical field of touch display, in particular to a touch module and a display device.
Background
With the increasing of the heat in the AMOLED (Active-matrix organic light emitting diode) market, the market pursues more and more peculiar structural forms of the AMOLED display screen, and the AMOLED display screen is changed from an early 2D cover plate to a 2.5D cover plate and then a 3D cover plate, but the structural differentiation is more popular with consumers, so that a lot of terminal customers require that the bending angle of a binding (bending) area is increased on the basis of the 3D cover plate, for example, the bending angle is increased to 90 °, which is undoubtedly a challenge in the fields of the cover plate industry, the display industry, the bonding industry and the like.
In the process of attaching the touch display structure to the cover plate with the binding area having a large bending angle, the touch module is easy to break at the binding area due to poor bending capability of the touch module, so that the touch function is invalid.
It is to be noted that the information invented in the background section above is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.
Disclosure of Invention
The disclosure provides a touch module and a display device, which have good bending capability to ensure good touch performance.
According to an aspect of the present disclosure, a touch module is provided, which includes: the touch screen comprises a substrate and at least one group of touch patterns, wherein each group of touch patterns comprises:
a conductive bridge formed on one side of the substrate and having a plurality of bridge bits arranged at intervals in a first direction;
an insulating support portion formed on one side of the substrate and covering the conductive bridge, the insulating support portion including a plurality of first support portions arranged at intervals in the first direction, second support portions located between adjacent first support portions, and first isolation portions located between the first support portions and the second support portions; each first supporting part corresponds to one bridging position and is provided with a through hole exposing the bridging position;
the touch electrode part comprises a plurality of first touch electrodes which are arranged in the first direction at intervals, second touch electrodes which are positioned between the adjacent first touch electrodes, and second fracture parts which are positioned between the first touch electrodes and the second touch electrodes; each first touch electrode is formed on one first supporting portion and is electrically connected with the bridging position through the via hole, and each second touch electrode is formed on the second supporting portion.
In an exemplary embodiment of the present disclosure, an outline of an orthographic projection of the first touch electrode on the substrate is located inside an outline of an orthographic projection of the first support part on the substrate;
the outline of the orthographic projection of the second touch electrode on the substrate is positioned inside the outline of the orthographic projection of the second supporting part on the substrate.
In an exemplary embodiment of the present disclosure, orthographic projections of the first touch electrode and the second touch electrode on the substrate are in a grid shape; and orthographic projections of the first supporting part and the second supporting part on the substrate are in a grid shape.
In an exemplary embodiment of the present disclosure, a line width of the grid lines in the first touch electrode and the second touch electrode is 1 μm to 10 μm.
In an exemplary embodiment of the present disclosure, the first touch electrode, the second touch electrode, and the conductive bridge are made of a metal material.
In an exemplary embodiment of the present disclosure, each of the touch patterns further includes an insulating protection portion covering the touch electrode portion and the insulating support portion.
In an exemplary embodiment of the present disclosure, the material of the insulation protection portion is an organic insulation material, and the material of the insulation support portion is an inorganic insulation material.
In an exemplary embodiment of the disclosure, each group of the touch patterns includes a plurality of conductive bridges, the plurality of conductive bridges are arranged at intervals in the first direction, and each conductive bridge has two connection regions.
In an exemplary embodiment of the present disclosure, the touch pattern is provided with a plurality of sets, the plurality of sets of touch patterns are arranged in a second direction, and the second direction intersects with the first direction; wherein the content of the first and second substances,
the first touch electrodes corresponding to the touch patterns in the second direction are mutually disconnected;
and second touch electrodes corresponding to the touch patterns in the second direction are connected.
In an exemplary embodiment of the present disclosure, the first supporting parts corresponding to the second direction in the plurality of sets of touch patterns are disconnected from each other;
and the second supporting parts corresponding to the touch patterns in the second direction are connected with each other.
In an exemplary embodiment of the present disclosure, one of the first touch electrode and the second touch electrode is a transmitting electrode, and the other is a receiving electrode.
According to another aspect of the present disclosure, a display device is provided, which includes a display module and the touch module described in any one of the above, wherein a substrate of the touch module is formed on a display side of the display module.
The technical scheme provided by the disclosure can achieve the following beneficial effects:
the utility model provides a touch module and display device, through set up first separation mouth on insulating supporting part, like this at the in-process that touch module buckles, the internal stress that insulating supporting part produced can release in first separation mouth department to avoid the internal stress accumulation too big, thereby can alleviate because the too big bridge position of leading to of insulating supporting part internal stress takes place cracked condition, then can guarantee that touch module still has good touch performance under the state of buckling, the yield of touch module has been improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It is to be understood that the drawings in the following description are merely exemplary of the disclosure, and that other drawings may be derived from those drawings by one of ordinary skill in the art without the exercise of inventive faculty.
Fig. 1 is a schematic cross-sectional view illustrating a partial structure of a touch module according to the related art;
fig. 2 is a schematic top view illustrating a touch module according to an embodiment of the disclosure;
FIG. 3 shows an enlarged schematic view of section A shown in FIG. 2;
FIG. 4 shows a schematic cross-sectional view of the structure shown in FIG. 3 in the direction B-B;
fig. 5 is a schematic top view illustrating a display device according to an embodiment of the disclosure;
fig. 6 is a schematic cross-sectional view illustrating a partial structure of a touch module according to another embodiment of the disclosure;
fig. 7 is a flowchart illustrating a method for manufacturing a touch module according to an embodiment of the disclosure;
fig. 8 shows a schematic structural view after completion of step S104;
fig. 9 shows a schematic configuration diagram after completion of step S108;
fig. 10 is a schematic cross-sectional view illustrating a partial structure of a display device according to an embodiment of the present disclosure.
Reference numbers in fig. 1:
1. a substrate; 2. a conductive bridge; 3. an insulating layer; 4. an emitter electrode; 5. a receiving electrode;
reference numerals in fig. 2-6, 8-10:
10. a touch module; 101. a substrate; 102. a conductive bridge; 102a, a bridge bit; 103. a first support section; 104. a second support portion; 105. a first fracture isolator; 106. a via hole; 107. a first touch electrode; 108. a second touch electrode; 109. a second fracture isolation opening; 110. an insulating protection section; 111. a filling section; 11. a display layer; 12. a packaging layer; 13. a polarizer; 14. a cover plate; 15. a flexible circuit board.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted.
In the related art, as shown in fig. 1, the mutually-compatible touch module may at least include three layers, for example: the touch control panel comprises a substrate 1, a bridging layer, an insulating layer 3 and a touch control electrode layer which are sequentially stacked; the touch electrode layer may include a Transmission (TX) electrode 4 and a Reception (RX) electrode 5. Each TX channel may comprise a plurality of connected TX electrodes 4 and each RX channel may comprise a plurality of connected RX electrodes 5, wherein the intersection of the RX and TX channels forms a capacitance. In order to avoid the RX channel and the TX channel being electrically connected at the intersection, the RX electrodes 5 of the RX channel may be directly connected to each other at the touch electrode layer, and the TX electrodes 4 of the TX channel may be connected to each other through the conductive bridge 102 of the bridging layer, so as to insulate the RX channel and the TX channel at the intersection; namely: the RX channel and TX channel are insulated at the intersection point through the arrangement of the insulating layer.
However, since the bending capability of the insulating layer is limited, when the touch module is bent, the internal stress of the insulating layer is increased with the increase of the bending angle, so that the bridging position (i.e., the position for connecting the conductive bridge 2 with the touch electrode) is easily broken, and the problem of poor contact occurs, which leads to the decrease of the touch performance. The touch module is not suitable for being applied to a display device bent at a large angle.
To solve this problem, as shown in fig. 2 to 4, the touch module 10 according to the present disclosure may include: a substrate 101 and at least one set of touch patterns. The substrate 101 may have a single-layer structure or a multi-layer structure; the substrate 101 may be an inorganic insulating material, such as: silicon oxide, silicon nitride, and the like, but is not limited thereto as the case may be. Each group of the touch patterns may include a conductive bridge 102, an insulating support portion, and a touch electrode portion, which are sequentially formed, wherein:
the conductive bridge 102 is formed on one side of the substrate 101 and has a plurality of bridge sites 102a spaced in the first direction X, where the bridge sites 102a refer to areas of the conductive bridge 2 that are in contact with the touch electrodes (the first touch electrode 107 and the second touch electrode), that is: such as the area defined by two adjacent, closer dashed lines on the conductive bridge 102 in fig. 4, 6, 9 and 10. It should be noted that the dotted lines shown on the conductive bridge 102 in fig. 4, 6, 9 and 10 do not have practical significance (e.g., do not represent the boundary of the hole, etc.), that is: it is not present in the actual product, but it is only for convenience to illustrate which region of the conductive bridge 102 is the bridge bit 102a, so as to facilitate understanding by others.
An insulating support is formed on one side of the substrate 101 and is disposed on the conductive bridge 102. In detail, the insulating support portion may include a plurality of first support portions 103 arranged at intervals in the first direction X and a second support portion 104 positioned between adjacent first support portions 103, wherein adjacent first support portions 103 and second support portions 104 are separated from each other by at least one first separation portion 105.
In fig. 4, the adjacent first supporting portions 103 and the second supporting portions 104 are separated by one first separation opening 105, but it should be understood that the number of the first separation openings 105 is not limited to one, and may be a plurality, depending on the requirement. In addition, when only one first separation opening 105 is provided between the first supporting portion 103 and the second supporting portion 104, it means that there is no other insulating portion between the first supporting portion 103 and the second supporting portion 104; when a plurality of first isolation openings 105 are provided between the first supporting portion 103 and the second supporting portion 104, it is described that other insulating portions may be further included between the first supporting portion 103 and the second supporting portion 104.
In some embodiments, the width of the first separator opening 105 may be less than or equal to 20 μm, such as: 5 μm, 10 μm, 15 μm, 20 μm, and the like; and the depth of the first discontinuity 105 may be 1 μm to 5 μm, such as: 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, and the like.
Note that the width is a dimension in the first direction X, and the depth is a dimension in the Z direction as shown in fig. 4.
As shown in fig. 2 and 4, each first supporting portion 103 corresponds to a bridging portion 102a, and the first supporting portion 103 has a via hole 106 exposing the bridging portion 102 a.
The touch electrode part comprises a plurality of first touch electrodes 107 arranged at intervals in the first direction X and second touch electrodes 108 positioned between the adjacent first touch electrodes 107, and the first touch electrodes 107 and the second touch electrodes 108 are insulated from each other; each first touch electrode 107 is formed on a first supporting portion 103 and electrically connected to the bridging portion 102a through the via 106, and each second touch electrode 108 is formed on the second supporting portion 104.
Optionally, the first touch electrode 107 and the second touch electrode 108 may be disposed at the same layer, and the adjacent first touch electrode 107 and the second touch electrode 108 are separated from each other by at least one second separation opening 109, so as to realize mutual insulation between the first touch electrode 107 and the second touch electrode 108.
In fig. 4, the adjacent first touch electrode 107 and the second touch electrode 108 are separated by one second separation opening 109, but it should be understood that the number of the second separation openings 109 is not limited to one, and may be multiple, depending on the requirement. In addition, when only one second separation opening 109 is disposed between the first touch electrode 107 and the second touch electrode 108, it indicates that no other conductive portion exists between the first touch electrode 107 and the second touch electrode 108; when a plurality of second isolation openings 109 are disposed between the first touch electrode 107 and the second touch electrode 108, it is indicated that other conductive portions may be further included between the first touch electrode 107 and the second touch electrode 108.
In the present disclosure, unless otherwise specified, the term "disposed on the same layer" is used to mean that two layers, components, members, elements or portions may be formed by one patterning process, and the two layers, components, members, elements or portions are generally formed of the same material.
But not limited thereto, the first touch electrode 107 and the second touch electrode 108 may also be located on different layers and insulated from each other by an insulating material, that is, the first touch electrode 107 and the second touch electrode 108 may be formed by different patterning processes.
In the embodiment of the disclosure, the first separation port 105 is formed in the insulating support portion, so that in the process of bending the touch module 10, the internal stress generated by the insulating support portion can be released at the first separation port 105 to avoid the excessive accumulation of the internal stress, thereby alleviating the situation that the bridging position 102a is fractured due to the excessive internal stress of the insulating support portion, further ensuring that the touch module 10 still has good touch performance in the bending state, and improving the yield of the touch module 10.
Since the touch module 10 has good bending performance and touch performance, the touch module 10 can be applied to a display device having a large bending angle (for example, the bending angle of the binding region C shown in fig. 5 is 90 °), and the application range of the touch module 10 is expanded.
In addition, in the present embodiment, the first isolation opening 105 on the insulating support portion and the via 106 thereof may be formed by a single patterning process; it should be understood that the "patterning process" generally includes the steps of coating, exposing, developing, etching, stripping of the photoresist, etc.; "one-time patterning process" means a process of forming a patterned layer, member, or the like using one mask plate; that is to say, in this embodiment, when the first isolation opening 105 is manufactured, the number of mask plates does not need to be increased, so that the development cost is not increased. Moreover, since the first isolation opening 105 is formed between the portions for supporting the first touch electrode 107 and the second touch electrode 108, the design of the first isolation opening 105 does not affect the structures of the first touch electrode 107 and the second touch electrode 108, thereby ensuring the touch effect.
The pattern of the insulating support portion may be substantially similar to the pattern of the touch electrode portion.
In the embodiment of the disclosure, one of the first touch electrode 107 and the second touch electrode 108 is a transmitting electrode, and the other is a receiving electrode, optionally, the first touch electrode 107 is a Transmitting (TX) electrode, and the second touch electrode 108 is a Receiving (RX) electrode, that is, the touch module 10 can be a mutual capacitive touch module 10.
It should be understood that there should be multiple sets of touch patterns in the touch module 10, as shown in fig. 2, the multiple sets of touch patterns are arranged in a second direction Y, and the second direction Y intersects with the first direction X, and optionally, the second direction Y is orthogonal to the first direction X. The first touch electrodes 107 corresponding to the multiple sets of touch patterns in the second direction Y are disconnected from each other; the first touch electrodes 107 connected by the conductive bridge 102 in each group of touch patterns may form a channel, for example: when the first touch electrode 107 is a transmitting electrode, the channel may be a TX channel; the second touch electrodes 108 corresponding to the multiple sets of touch patterns in the second direction Y are connected to each other, that is: the plurality of second touch electrodes 108 corresponding to and connected in the second direction Y may form another channel, such as: when the second touch electrode 108 is a receiving electrode, the channel may be an RX channel.
That is to say, the touch module 10 of the present disclosure may include a plurality of TX channels arranged at intervals in the second direction Y, and a plurality of RX channels arranged at intervals in the first direction X, wherein orthographic projections of the RX channels and the TX channels on the substrate 101 intersect to form a grid, and a capacitor is formed at a position where the RX channels and the TX channels intersect.
Optionally, the first supporting parts 103 corresponding to each other in the second direction Y in the multiple sets of touch patterns are disconnected from each other; the second supporting portions 104 corresponding to each other in the second direction Y in the plurality of sets of touch patterns are connected to each other; that is to say, the orthogonal projection pattern of the layer where the insulating supporting portion is located on the substrate 101 in the entire touch module 10 may be substantially similar to the orthogonal projection pattern of the layer where the touch electrode portion is located on the substrate 101, and is in a grid shape, so that the supporting stability of the layer where the insulating supporting portion is located is ensured, and meanwhile, the situation that the bridging portion 102a is broken due to the excessive internal stress of the insulating supporting portion can be alleviated, and then, the touch module 10 can be ensured to still have good touch performance in a bending state, and the yield of the touch module 10 is improved.
In an embodiment of the disclosure, as shown in fig. 2, a plurality of conductive bridges 102 may be disposed in each group of touch patterns, the plurality of conductive bridges 102 are arranged at intervals in the first direction X, and each conductive bridge 102 has two bridge positions 102a, that is, each conductive bridge 102 can implement connection between adjacent first touch electrodes 107 in the first direction X; by the design, when the first touch electrodes 107 are connected, the conductive bridge can be prevented from being broken due to excessive stress accumulation in the first direction X in the bending process, and therefore the situation that other touch positions in the whole first direction X are all out of order due to the fact that a certain part of the conductive bridge 102 is broken in the bending process can be avoided.
However, each group of touch patterns may also include only one conductive bridge 102 extending in the first direction X, and the first touch electrodes 107 in each group of touch patterns are connected by one conductive bridge 102 to form one touch channel, which is specifically set according to actual requirements.
It should be noted that, for example, the display device is a mobile phone, as shown in fig. 5, the binding regions C of the mobile phone are usually disposed on two sides of the short side direction of the mobile phone, and the bending angle of the binding region C of the cover plate 14 can be 90 °, that is, the display screen of the mobile phone can be a waterfall screen, in this case, if the touch module 10 is attached to the cover plate 14, in order to better alleviate the situation that the bridge connection position 102a is broken due to an excessive internal stress in the insulating support portion, the first direction X of the disclosure can be the short side direction of the mobile phone, so that the touch module 10 can still have good touch performance in a bent state, and the yield of the touch module 10 is improved.
In an embodiment of the present disclosure, as shown in fig. 2, an outline of an orthographic projection of the first touch electrode 107 on the substrate 101 is located inside an outline of an orthographic projection of the first supporting part 103 on the substrate 101; and the outline of the orthographic projection of the second touch electrode 108 on the substrate 101 is positioned at the inner side of the outline of the orthographic projection of the second supporting part 104 on the substrate 101, so that the mask plate is convenient to align when the touch electrode part is subjected to a composition process, the manufacturing precision can be ensured, and good touch performance can be ensured.
The orthographic projections of the first touch electrode 107 and the second touch electrode 108 on the substrate 101 can be in a grid shape, so that the internal stress generated by the touch electrode part can be better released in the bending process of the touch module 10, the breakage of the touch electrode part can be avoided, and the stability of the touch performance can be ensured; in addition, the flexibility of the touch electrode portion is improved, so that the flexibility of the whole touch module 10 is improved, the touch module 10 has good bending capability, and the touch module 10 is suitable for a display device with a large bending angle (for example, the bending angle of the binding region C is 90 °), and the application range of the touch module 10 is expanded.
Similarly, the orthographic projections of the first supporting portion 103 and the second supporting portion 104 on the substrate 101 can be in a grid shape, so that the internal stress generated by the insulating supporting portions can be better released in the bending process of the touch module 10, thereby avoiding the situation that the bridging portion 102a is broken, and further ensuring the stability of the touch performance; in addition, the flexibility of the entire touch module 10 can be further improved, so that the touch module 10 has good bending capability, and the application range of the touch module 10 is expanded.
Optionally, the line width of the grid lines in the first touch electrode 107 and the second touch electrode 108 may be 1 μm to 10 μm, so as to improve the bending performance of the touch electrode portion while ensuring the conductive performance.
The first touch electrode 107, the second touch electrode 108, and the conductive bridge 102 may be made of a metal material, such as: the metal material such as silver and copper has good conductivity, so that the touch sensitivity of the entire touch module 10 can be improved.
In some embodiments, as shown in fig. 6, each group of touch patterns may further include a filling portion 111, and the filling portion 111 is filled in the first isolation opening 105. In order to ensure that the first isolation opening 105 still has a good capability of releasing stress, the material of the filling portion 111 and the material of the insulating support portion may be different, so as to avoid generating a bonding force between the filling portion 111 located in the first isolation opening 105 and the insulating support portion, that is, the filling portion 111 located in the first isolation opening 105 only contacts with the insulating support portion, and in the bending process, a gap may be generated between the filling portion 111 located at the first isolation opening 105 and the insulating support portion, so as to still release stress, so as to avoid an excessive stress accumulation in the insulating support portion, thereby alleviating a situation that the bridging portion 102a is broken due to an excessive internal stress in the insulating support portion, and thus ensuring that the touch module 10 still has a good touch performance in the bending state, and improving a yield of the touch module 10.
Alternatively, the material of the insulating support portion may be an inorganic material, and the inorganic material may be silicon oxide, silicon nitride, or the like; the inorganic insulating material may be formed by patterning the substrate 101 on the substrate 101 by a single patterning process such as CVD (Chemical Vapor Deposition) to form an insulating support; the material of the filling portion 111 may be an organic material, and specifically may be an organic insulating material, such as: PI (Polyimide) and the like to avoid the filling portion 111 from being touched with the first touch electrode 107 and the second touch electrode 108 by mistake during the bending process.
In this embodiment, the insulating support portion is made of an inorganic material, so that strength and support stability of the insulating support portion can be ensured, and in addition, the bonding strength between the touch electrode and the insulating support portion can be ensured, thereby ensuring touch stability. The filling part 111 is made of an organic material, so that the flexibility of the filling part 111 can be improved, even if the filling part 111 is located in the first fracture isolation part 105, the filling part has better flexibility, and therefore, the internal stress generated in the bending process of the insulating support part can be absorbed, the phenomenon that the internal stress of the insulating support part is too large to cause the bridging part 102a to break can be avoided, the situation that the internal stress of the insulating support part is too large to cause the bridging part 102a to break is relieved, the touch module 10 can be guaranteed to have good touch performance under the bending state, and the yield of the touch module 10 is improved.
In some embodiments, as shown in fig. 6, each group of touch patterns may further include an insulating protection portion 110, the insulating protection portion 110 covers the touch electrode portion and the filling portion 111, and the insulating protection portion 110 is disposed to protect the first touch electrode 107 and the second touch electrode 108 in the touch electrode portion, so as to avoid the touch electrode portion from being damaged due to collision with a structure in an external environment, thereby improving the structural stability of the touch module 10.
Alternatively, the material of the insulation protection part 110 may be an inorganic material, such as: materials such as silicon oxide and silicon nitride; and may also be organic materials such as: PI (Polyimide), and the like. Preferably, the material of the insulating protection part 110 is the same as that of the filling part 111, so that the filling part 111 and the insulating protection part 110 can be manufactured at the same time, that is, the insulating protection part 110 and the filling part 111 can be integrally formed, so as to reduce the processing difficulty.
The present disclosure also provides a method for manufacturing a touch module, and the structure of the touch module can be the touch module 10 described in the foregoing embodiments, which is not described in detail herein. As shown in fig. 7, the manufacturing method may include:
step S100, providing a substrate 101;
step S102, forming a first conductive film layer on the substrate 101; for example, a metal material such as Ag or Cu may be formed on the substrate 101 by evaporation or magnetron sputtering, so as to form a first conductive film layer;
step S104, performing a patterning process on the first conductive film layer to form a conductive bridge 102, as shown in fig. 8, where the conductive bridge 102 has a plurality of bridge bits 102a (as shown in fig. 9) arranged at intervals in the first direction X;
step S106 of forming a first insulating film covering the substrate 101 and the conductive bridge 102; for example, an inorganic insulating material is deposited on the substrate 101 and the conductive bridge 102 by CVD or the like;
step S108, performing a patterning process on the first insulating film to form an insulating support portion covering the conductive bridge 102, as shown in fig. 9, where the insulating support portion includes a plurality of first support portions 103 arranged at intervals in the first direction X, second support portions 104 located between adjacent first support portions 103, and first isolation openings 105 located between the first support portions 103 and the second support portions 104; each first supporting part 103 corresponds to one bridging position 102a, and the first supporting part 103 is provided with a through hole 106 exposing the bridging position 102 a;
step S110, forming a touch electrode portion, as shown in fig. 4, where the touch electrode portion includes a plurality of first touch electrodes 107 arranged at intervals in the first direction X, second touch electrodes 108 located between adjacent first touch electrodes 107, and second isolation openings 109 located between the first touch electrodes 107 and the second touch electrodes 108; each first touch electrode 107 is formed on a first supporting portion 103 and electrically connected to the bridging portion 102a through the via 106, and each second touch electrode 108 is formed on a second supporting portion 104; for example, a metal material such as Ag or Cu may be formed on the substrate 101 by magnetron sputtering or the like, and a one-step patterning process is performed to form the touch electrode portion.
The specific structures and advantageous effects of the conductive bridge 102, the insulating support portion, and the touch electrode portion in the manufacturing method of the embodiment of the disclosure have been described in the above embodiments of the touch module 10, and are not repeated herein.
In an embodiment of the present disclosure, the manufacturing method may further include forming a filling portion 111 filled in the first isolation opening 105 and an insulating protection portion 110 covering the touch electrode portion and the filling portion 111, as shown in fig. 6, where the insulating protection portion 110 may be made of an organic insulating material.
It should be noted that although the various steps of the methods of the present disclosure are depicted in the drawings in a particular order, this does not require or imply that these steps must be performed in this particular order, or that all of the depicted steps must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions, etc.
An embodiment of the disclosure further provides a display device, as shown in fig. 5 and 10, which includes a display module and the touch module 10 described in any of the foregoing embodiments, wherein the substrate 101 of the touch module 10 may be formed on the display side of the display module. The display module may be an AMOLED display module, but is not limited thereto, as the case may be. The display module of the present disclosure may include a display layer 11 and an encapsulation layer 12 located on a display side of the display layer 11, wherein the substrate 101 of the touch module 10 may be disposed on a side of the encapsulation layer 12 away from the display layer 11.
According to the embodiment of the present disclosure, the specific type of the display device is not particularly limited, and any display device commonly used in the art may be used, specifically, for example, an AMOLED display screen, a mobile device such as a mobile phone, a wearable device such as a watch, a VR device, and the like.
It should be noted that the display device includes other necessary components and components besides the array substrate and the integrated circuit board, taking the display as an example, as shown in fig. 5 and 10, specifically, for example, a glass cover plate 14, a polarizer 13 located between the touch module 10 and the cover plate 14, a flexible circuit board 15, a housing, a power line, and the like, which are well understood in the art and can be supplemented accordingly according to the specific use requirements of the display device, and are not described herein again.
Although relative terms, such as "upper" and "lower," may be used in this specification to describe one element of an icon relative to another, these terms are used in this specification for convenience only, e.g., in accordance with the orientation of the examples described in the figures. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.
The terms "a," "an," "the," "said," and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (12)
1. A touch module, comprising: the touch screen comprises a substrate and at least one group of touch patterns, wherein each group of touch patterns comprises:
a conductive bridge formed on one side of the substrate and having a plurality of bridge bits arranged at intervals in a first direction;
the insulating support part is formed on one side of the substrate and arranged on the conductive bridge, the insulating support part comprises a plurality of first support parts which are arranged at intervals in the first direction and a second support part which is positioned between the adjacent first support parts, and the adjacent first support parts and the adjacent second support parts are mutually separated and disconnected through at least one first partition opening; each first supporting part corresponds to one bridging position and is provided with a through hole exposing the bridging position;
the touch electrode part comprises a plurality of first touch electrodes arranged at intervals in the first direction and second touch electrodes positioned between the adjacent first touch electrodes and insulated from the first touch electrodes; each first touch electrode is formed on one first supporting portion and is electrically connected with the bridging position through the via hole, and each second touch electrode is formed on the second supporting portion.
2. The touch module of claim 1,
the first touch electrode and the second touch electrode are arranged on the same layer, and the adjacent first touch electrode and the second touch electrode are mutually separated through at least one second separation port.
3. The touch module of claim 1,
the outline of the orthographic projection of the first touch electrode on the substrate is positioned inside the outline of the orthographic projection of the first supporting part on the substrate;
the outline of the orthographic projection of the second touch electrode on the substrate is positioned inside the outline of the orthographic projection of the second supporting part on the substrate.
4. The touch module of claim 3,
orthographic projections of the first touch electrode and the second touch electrode on the substrate are in a grid shape; and orthographic projections of the first supporting part and the second supporting part on the substrate are in a grid shape.
5. The touch module of claim 1,
the width of the first fracture is less than or equal to 20 μm, and the depth of the first fracture is 1 μm to 5 μm.
6. The touch module of claim 1, wherein each of the touch patterns further comprises a filling portion, and the filling portion is filled in the first partition.
7. The touch module of claim 6, wherein the filling portion is made of an organic material, and the insulating support portion is made of an inorganic material.
8. The touch module of claim 6, wherein each of the touch patterns further comprises an insulating protection portion covering the touch electrode portion and the filling portion.
9. The touch module of claim 1,
the touch control device comprises a touch control pattern, a plurality of conductive bridges and a plurality of connecting areas, wherein the touch control pattern is arranged in each group, the conductive bridges are arranged in the first direction at intervals, and each conductive bridge is provided with two connecting areas.
10. The touch module of claim 1,
the touch control patterns are provided with a plurality of groups, the plurality of groups of touch control patterns are arranged in a second direction, and the second direction is intersected with the first direction; wherein the content of the first and second substances,
the first touch electrodes corresponding to the touch patterns in the second direction are mutually disconnected;
and second touch electrodes corresponding to the touch patterns in the second direction are connected.
11. The touch module of claim 10,
the first supporting parts corresponding to the touch patterns in the second direction are mutually disconnected;
and the second supporting parts corresponding to the touch patterns in the second direction are connected with each other.
12. A display device comprising a display module and the touch module of any one of claims 1-11, wherein a substrate of the touch module is formed on a display side of the display module.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194591.6A CN111324238B (en) | 2020-03-19 | 2020-03-19 | Touch module and display device |
| US17/416,552 US11740748B2 (en) | 2020-03-19 | 2020-12-29 | Touch module and display device |
| PCT/CN2020/140775 WO2021184903A1 (en) | 2020-03-19 | 2020-12-29 | Touch control module and display device |
| US18/210,100 US20230325042A1 (en) | 2020-03-19 | 2023-06-15 | Touch module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010194591.6A CN111324238B (en) | 2020-03-19 | 2020-03-19 | Touch module and display device |
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| Publication Number | Publication Date |
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| CN111324238A true CN111324238A (en) | 2020-06-23 |
| CN111324238B CN111324238B (en) | 2021-08-06 |
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| US (2) | US11740748B2 (en) |
| CN (1) | CN111324238B (en) |
| WO (1) | WO2021184903A1 (en) |
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Also Published As
| Publication number | Publication date |
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| CN111324238B (en) | 2021-08-06 |
| US11740748B2 (en) | 2023-08-29 |
| US20220326808A1 (en) | 2022-10-13 |
| US20230325042A1 (en) | 2023-10-12 |
| WO2021184903A1 (en) | 2021-09-23 |
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